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Q:

upstream O2 sensor bank 1 diagram on 2003 Jaguar X-Type

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I need to replace both O2 sensors for upstream bank 1 but not too sure exactly which sensor, please supply picture diagram, thanks
(1) Answer
I have no picture or diagram. The upstream O2 sensors are before the catalytic converters and the downstream sensors are behind them. I believe that the upstream sensors are in the exhaust manifolds. You'll have to look for yourself.
Bank one is the side of the engine that has #1 cylinder, FYI.
If you need more information, here are two online sources for you:
For AllData:
http://bit.ly/AllData_Repair_Manuals_Online
For Mitchell:
http://bit.ly/mitchell_repair_manuals_online
d pictures, here are some resources for you: